Re: Validating string for FDQN

Path	csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!feeder.erje.net!dedekind.zen.co.uk!zen.net.uk!hamilton.zen.co.uk!shaftesbury.zen.co.uk.POSTED!not-for-mail
From	Nobody <nobody@nowhere.com>
Subject	Re: Validating string for FDQN
Date	Tue, 07 Jun 2011 21:46:04 +0100
User-Agent	Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)
Message-Id	<pan.2011.06.07.20.45.52.953000@nowhere.com>
Newsgroups	comp.lang.python
References	<d30814aa-494f-457f-8a56-5ebe802f4725@z7g2000prh.googlegroups.com> <pan.2011.06.07.05.23.21.453000@nowhere.com> <mailman.2521.1307425928.9059.python-list@python.org>
MIME-Version	1.0
Content-Type	text/plain; charset=UTF-8
Content-Transfer-Encoding	8bit
Lines	18
Organization	Zen Internet
NNTP-Posting-Host	14724863.news.zen.co.uk
X-Trace	DXC=hBKDhcJ[9]8<\dXg9]Wc52nok4Z\<mH49hDU:2=XKPk8REYPL>OSV:6QOMCU8L]Sh7f;b2OQKe8d4
X-Complaints-To	abuse@zen.co.uk
Xref	x330-a1.tempe.blueboxinc.net comp.lang.python:7185

Show key headers only | View raw

On Tue, 07 Jun 2011 15:52:05 +1000, Chris Angelico wrote:

>> [1] If a hostname ends with a dot, it's fully qualified.
> 
> Outside of BIND files, when do you ever see a name that actually ends
> with a dot?

Whenever it is entered that way.

This may be necessary on complex networks with local subdomains, i.e.
where resolv.conf has "options ndots:2". E.g. "foo.it" might resolve to
"foo.it.bar.edu" (in bar.edu's IT department's subdomain), requiring a
trailing dot if you want the Italian site "foo.it".

The canonical real-world example of this used to be foo.cs resolving to
foo.cs.berkeley.edu (UCB Comp. Sci. department), but ever since .cs split
into .cz and .sk it's no longer ambiguous.

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Validating string for FDQN Eric <eric.wong.t@gmail.com> - 2011-06-06 17:40 -0700
  Re: Validating string for FDQN harrismh777 <harrismh777@charter.net> - 2011-06-06 20:55 -0500
  Re: Validating string for FDQN Chris Angelico <rosuav@gmail.com> - 2011-06-07 12:50 +1000
  Re: Validating string for FDQN Philip Semanchuk <philip@semanchuk.com> - 2011-06-06 23:10 -0400
  Re: Validating string for FDQN Nobody <nobody@nowhere.com> - 2011-06-07 06:23 +0100
    Re: Validating string for FDQN Chris Angelico <rosuav@gmail.com> - 2011-06-07 15:52 +1000
      Re: Validating string for FDQN Chris Torek <nospam@torek.net> - 2011-06-07 06:20 +0000
      Re: Validating string for FDQN Nobody <nobody@nowhere.com> - 2011-06-07 21:46 +0100

csiph-web